Keymap High Address Register

Number	TBRegisterNumber::$28
Readable	TBRegisterReadable::Yes
Writable	TBRegisterWritable::Yes
Short Description	ShortDesc::High address of Keymap (MSB in bit 0), read palette value from $44

Write:

 bits 7:1 = Reserved, must be 0
 bit 0 = MSB keymap address

Read:

 bits 7:0 = Stored palette value from {{#ask:

TBRegisterNumber::$44 }} ($44)